Drei Kundenzone puts your mobile account in your pocket, letting you monitor usage, charges and bills from any smartphone or tablet. The app displays remaining free units (minutes, SMS, data), the current cost status and recent invoices with itemized call lists so you always know where your spending stands. You can view and edit contract information, switch tariffs or add extras and top-ups instantly. Sensitive data is protected by a customer password, and registering lets you access the account from any device worldwide, which is handy for quickly blocking a number if a device is lost or stolen.

Key Features

⭐ See cumulative costs for the current billing period at a glance.

⭐ View remaining free units such as minutes, SMS and data in real time.

⭐ Access recent invoices and detailed call lists for past months.

⭐ Pay open invoices and recharge prepaid credit directly in the app.

⭐ Automatic recognition on the provider network lets you access Drei Kundenzone without logging in when you are connected.

⭐ Manage all contract numbers, change tariff options, set call forwarding and block numbers after loss or theft.

Advantages

✅ Centralized control of billing, usage and contract details reduces surprises on your next bill.

✅ Quick actions for security, like immediate number suspension, protect your account after device loss.

✅ Drei Kundenzone makes it easy to buy extra packages, request device credits or perform tariff changes from your phone or tablet.

✅ The interface supports both smartphones and tablets, keeping account management convenient on any device.

Disadvantages

❎ Full remote access requires registration and your customer password, so one-time use without setup is limited.

❎ Some features may be more convenient when accessed on the provider network, otherwise a login is needed for the same functions.